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公开(公告)号：US2686879A
公开(公告)日：1954-08-17
申请号：US25364851
申请日：1951-10-29
Applicant: RCA CORP
Inventor： YUAN PAN WEN , WITTENBURG CHARLES W
IPC: H03J3/28
CPC classification number: H03J3/28
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公开(公告)号：US2760060A
公开(公告)日：1956-08-21
申请号：US32531452
申请日：1952-12-11
Applicant: RCA CORP
Inventor： WITTENBURG CHARLES W , HERMELING JR GILBERT C
IPC: H03D7/02
CPC classification number: H03D7/02
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